EP 0764005 A1 19970326 - GAS-TIGHT SEAL FOR SURGICAL TROCARS
Title (en)
GAS-TIGHT SEAL FOR SURGICAL TROCARS
Title (de)
GASDICHTUNG FÜR CHIRURGISCHEN TROKAR
Title (fr)
FERMETURE ETANCHE AUX GAZ POUR TROCARTS CHIRURGICAUX
Publication
Application
Priority
- GB 9500645 W 19950323
- GB 9406038 A 19940326
- GB 9420633 A 19941013
Abstract (en)
[origin: WO9526163A1] A gas-tight seal module (6) is incorporated in a trocar system to form a gas-tight seal about an instrument (12) inserted into the cannula of the trocar system. The module (6) incorporates an apertured disc (30). The aperture in the disc can be stretched to accommodate a seal about an instrument (12) inserted into the cannula. The disc is carried by a flaccid membrane (20) which extends across the module (6). A pair of rigid washers (32 and 34) clamped on opposite sides of the disc (6) are constrained for movement between two parallel spaced surfaces. The disc is thus freely moveable in its own plane to accommodate off-axis movement of the instrument so avoiding the breakage of the seal with the instrument which would otherwise occur if the disc did not have the same freedom of movement. The disc (30) also acts to clean the surface of the instrument when withdrawn so as to avoid contamination of a flap valve (10) upstream of the disc (30).
IPC 1-7
IPC 8 full level
A61B 17/34 (2006.01); A61M 39/06 (2006.01)
CPC (source: EP US)
A61B 17/3462 (2013.01 - EP US); A61M 39/06 (2013.01 - EP US); A61M 2039/0626 (2013.01 - EP US); A61M 2039/0633 (2013.01 - EP US); A61M 2039/064 (2013.01 - EP US)
Citation (search report)
See references of WO 9526163A1
Designated contracting state (EPC)
CH DE ES FR GB IT LI
DOCDB simple family (publication)
WO 9526163 A1 19951005; CA 2186517 A1 19951005; EP 0764005 A1 19970326; US 5730728 A 19980324; US 5879368 A 19990309
DOCDB simple family (application)
GB 9500645 W 19950323; CA 2186517 A 19950323; EP 95912332 A 19950323; US 70476596 A 19960926; US 92609297 A 19970909